CN203312138U - Magnetic quenching SF6 three-position load switch - Google Patents
Magnetic quenching SF6 three-position load switch Download PDFInfo
- Publication number
- CN203312138U CN203312138U CN2013203383209U CN201320338320U CN203312138U CN 203312138 U CN203312138 U CN 203312138U CN 2013203383209 U CN2013203383209 U CN 2013203383209U CN 201320338320 U CN201320338320 U CN 201320338320U CN 203312138 U CN203312138 U CN 203312138U
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- contact
- moving contact
- load switch
- main fixed
- fixed contact
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Abstract
The utility model discloses a magnetic quenching SF6 three-position load switch which comprises a main static contact, a moving contact and an earthing static contact. The moving contact is provided with two contact pieces. The main static contact is inserted between the two contact pieces. The contact part between the main static contact and the contact pieces of the moving contact is provided with a permanent magnet. Corresponding positions of the main static contact and the moving contact are provided with copper-tungsten alloys. The main static contact is an overall structure, and two sides of the main static contact are respectively provided with a radiating groove. The two contact pieces of the moving contact are connected through bolts. Outer sides of the two contact pieces are respectively provided with a contact spring. Inner sides of the two contact pieces are provided with stop collars. According to the utility model, current-carrying capability and arc-erosion resistance of the moving contact are raised, contact pressure is convenient to adjust, assembling difficulty is improved, opening velocity and closing velocity are raised, and arcing time is shortened.
Description
Technical field
The utility model relates to a kind of SF6 on-load switch, relates in particular to a kind of SF of magnetic quenching
6Three-stations load switch.
Background technology
SF
6On-load switch is mainly used in the high-voltage ring main unit manufacturing, is widely used in the high pressure transmission and distribution networks, in the 10kV electric pressure, has applied very over a long time stable performance.But in 24kV electric pressure performance (if meritorious load open is disconnected, transfer current cut-offs etc.), very large decline is arranged, sometimes may cause the forfeiture of function, make power supply quality descend, cause accident of power supply.
The main cause that causes the existing product hydraulic performance decline is the rising of the recovery voltage after cut-offfing, the primary voltage grade is 12kV, and while using the 24kV electric pressure, make arc energy rise a lot, electric arc localized burn contact is serious, and radiating condition descends, and the arcing time is elongated, make break performance significantly descend, final failure of interruption.
SF6 on-load switch of the prior art, moving contact are single chip architecture; Main fixed contact is composite construction, and internal layer is fine copper, and skin is beryllium-bronze; Contact pressure provides by the spring steel plate in the fixed contact outside.
There is following shortcoming at least in above-mentioned prior art:
Moving contact flow conductivity and heat-sinking capability are poor, arc resistant ablation ability; Main fixed contact electric interface is more, has increased the resistance of major loop, and live stream ability is poor, arc resistant ablation ability; Contact pressure is adjusted difficulty, is not easy to debugging, and spring steel plate heat treatment required precision is higher; Electric arc is easily concentrated ablation contact part, is unfavorable for repeatedly cut-offfing; Minute, closing speed is on the low side, the arcing time is longer.
The utility model content
The purpose of this utility model is to provide the SF6 three-stations load switch of a kind of current capacity and the high magnetic quenching of arc resistant ablation ability.
The purpose of this utility model is achieved through the following technical solutions:
The SF of magnetic quenching of the present utility model
6Three-stations load switch, comprise main fixed contact, moving contact, grounding static contact, and described moving contact is provided with the biplate contact, and described main fixed contact is inserted between biplate, and described main fixed contact is provided with permanent magnet with the position that the contact of described moving contact contacts.
By the technical scheme that above-mentioned the utility model provides, can be found out the SF of the magnetic quenching that the utility model embodiment provides
6Three-stations load switch, because moving contact is provided with the biplate contact, main fixed contact is inserted between biplate, and main fixed contact is provided with permanent magnet with the position that the contact of moving contact contacts, and has improved current capacity and the arc resistant ablation ability of moving contact.
The accompanying drawing explanation
The SF of the magnetic quenching that Fig. 1 provides for the utility model embodiment
6The structural representation of three-stations load switch;
Fig. 2 is the structural representation of moving contact in the utility model embodiment.
In figure:
1, main fixed contact, 2, grounding static contact, 3, copper-tungsten, 4, moving contact, 5, the transmission shaft insulation, 6, permanent magnet, 7, touch spring, 8, stop collar, 9, radiating groove.
Embodiment
Below will be described in further detail the utility model embodiment.
The SF of magnetic quenching of the present utility model
6Three-stations load switch, its preferably embodiment be:
Comprise main fixed contact, moving contact, grounding static contact, described moving contact is provided with the biplate contact, and described main fixed contact is inserted between biplate, and described main fixed contact is provided with permanent magnet with the position that the contact of described moving contact contacts.
Described main fixed contact is provided with copper-tungsten towards the position of described moving contact, and described moving contact is provided with copper-tungsten towards the position of described main fixed contact.
Described main fixed contact is overall structure, and its both sides are respectively equipped with radiating groove.
Between two contacts of described moving contact, be bolted, the outside of two contacts is respectively equipped with touch spring.
The inboard of described two contacts is provided with stop collar.
The SF6 three-stations load switch of magnetic quenching of the present utility model, improved current capacity and the arc resistant ablation ability of moving contact; Reduce the electric interface of fixed contact, improved current capacity, improved the arc erosion ability; Make contact pressure be convenient to adjust, improved assembly difficulty; Electric arc is moved in contact surface, improved that the ablation contact is local brings unfavorable situation of repeatedly cut-offfing because electric arc is easily concentrated; Improved opening velocity and closed sum velocity, having shortened the arcing time.
Specific embodiment, as shown in Figure 1 and Figure 2:
Moving contact is the biplate structure, and touch spring is loaded on to the moving contact outside;
Change main fixed contact into overall structure, and increase area of dissipation;
At the position of dynamic/static contact arc erosion soldering copper tungsten alloy;
On main fixed contact, near the position of dynamic/static contact contact, the cuboid permanent magnet is installed;
The rigidity of the energy accumulation spring of spring mechanism is improved, in order to promote divide-shut brake speed;
The beneficial effect that technical solutions of the utility model are brought:
Electric current break performance that can improving product, make cut-off more reliable and stable; This on-load switch moving contact is the biplate structure, has increased live stream ability and area of dissipation; Touch spring is loaded on the moving contact outside, has facilitated the adjustment of contact pressure, is of value to the adjustment of product major loop resistance; Main fixed contact changes overall structure into, has reduced electric interface, and major loop is descended, and increases groove on its surface, with increasing heat radiation area; At the position of dynamic/static contact arc erosion soldering copper tungsten alloy; To improve arc resisting ablation ability, this time cut-off and lay the foundation for more; On main fixed contact, near the position of dynamic/static contact contact, cuboid high-quality permanent magnet is installed, this permanent magnet magnetic energy product and remanent magnetism parameter are high, rely on this magnetic field that electric arc is moved in contact surface, and at SF
6Under the blowing of gas, make electric arc extinguish rapidly, improve arc extinguishing speed, reduce the ablation infringement of electric arc to contact, improve the electric current open and close times; The rigidity of the energy accumulation spring of spring mechanism is improved, in order to promote divide-shut brake speed, shorten the arcing time, reduce the ablation infringement of electric arc to lifting one's head.
The above; it is only preferably embodiment of the utility model; but protection range of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement, within all should being encompassed in protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with the protection range of claims.
Claims (5)
1. the SF of a magnetic quenching
6Three-stations load switch, comprise main fixed contact, moving contact, grounding static contact, it is characterized in that, described moving contact is provided with the biplate contact, described main fixed contact is inserted between biplate, and described main fixed contact is provided with permanent magnet with the position that the contact of described moving contact contacts.
2. the SF of magnetic quenching according to claim 1
6Three-stations load switch, is characterized in that, described main fixed contact is provided with copper-tungsten towards the position of described moving contact, and described moving contact is provided with copper-tungsten towards the position of described main fixed contact.
3. the SF of magnetic quenching according to claim 2
6Three-stations load switch, is characterized in that, described main fixed contact is overall structure, and its both sides are respectively equipped with radiating groove.
4. according to the SF of claim 1,2 or 3 described magnetic quenchings
6Three-stations load switch, is characterized in that, is bolted between two contacts of described moving contact, and the outside of two contacts is respectively equipped with touch spring.
5. the SF of magnetic quenching according to claim 4
6Three-stations load switch, is characterized in that, the inboard of described two contacts is provided with stop collar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203383209U CN203312138U (en) | 2013-06-13 | 2013-06-13 | Magnetic quenching SF6 three-position load switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203383209U CN203312138U (en) | 2013-06-13 | 2013-06-13 | Magnetic quenching SF6 three-position load switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203312138U true CN203312138U (en) | 2013-11-27 |
Family
ID=49618327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203383209U Withdrawn - After Issue CN203312138U (en) | 2013-06-13 | 2013-06-13 | Magnetic quenching SF6 three-position load switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203312138U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280368A (en) * | 2013-06-13 | 2013-09-04 | 北京合纵科沃尔电力科技有限公司 | Magnetic quenching SF6 three-position load switch |
| CN107706037A (en) * | 2017-10-29 | 2018-02-16 | 默飓电气有限公司 | A kind of high voltage load switch |
-
2013
- 2013-06-13 CN CN2013203383209U patent/CN203312138U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280368A (en) * | 2013-06-13 | 2013-09-04 | 北京合纵科沃尔电力科技有限公司 | Magnetic quenching SF6 three-position load switch |
| CN103280368B (en) * | 2013-06-13 | 2015-10-28 | 北京合纵科沃尔电力科技有限公司 | The SF6 three-stations load switch of magnetic quenching |
| CN107706037A (en) * | 2017-10-29 | 2018-02-16 | 默飓电气有限公司 | A kind of high voltage load switch |
| CN107706037B (en) * | 2017-10-29 | 2020-11-03 | 默飓电气有限公司 | High-voltage load switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131127 Effective date of abandoning: 20151028 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |